S1·E12 Birds Gotta Fly, Fish Gotta Talk
Aired December 19, 1964
Synopsis
During Christmas, the Castaways get homesick and remember the first day they were shipwrecked. When Santa Claus "appears" on the island, many suspect he is the Skipper in costume. However, just as Santa departs while wishing the Castaways a Merry Christmas, the Skipper appears from the other direction.